3 files changed, 115 insertions, 0 deletions
diff --git a/gr-blocks/lib/CMakeLists.txt b/gr-blocks/lib/CMakeLists.txt
index 72e09d5f9..4cb3bc995 100644
--- a/gr-blocks/lib/CMakeLists.txt
+++ b/gr-blocks/lib/CMakeLists.txt
@@ -158,6 +158,7 @@ list(APPEND gr_blocks_sources
     short_to_char_impl.cc
     short_to_float_impl.cc
     stream_mux_impl.cc
+    stream_to_streams_impl.cc
     uchar_array_to_float.cc
     uchar_to_float_impl.cc
 )
diff --git a/gr-blocks/lib/stream_to_streams_impl.cc b/gr-blocks/lib/stream_to_streams_impl.cc
new file mode 100644
index 000000000..9e9052e7d
--- /dev/null
+++ b/gr-blocks/lib/stream_to_streams_impl.cc
@@ -0,0 +1,70 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2012 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "stream_to_streams_impl.h"
+#include <gr_io_signature.h>
+#include <string.h>
+
+namespace gr {
+  namespace blocks {
+
+    stream_to_streams::sptr stream_to_streams::make(size_t itemsize, size_t nstreams)
+    {
+      return gnuradio::get_initial_sptr(new stream_to_streams_impl(itemsize, nstreams));
+    }
+
+    stream_to_streams_impl::stream_to_streams_impl(size_t itemsize, size_t nstreams)
+      : gr_sync_decimator("stream_to_streams",
+			  gr_make_io_signature (1, 1, itemsize),
+			  gr_make_io_signature (nstreams, nstreams, itemsize),
+			  nstreams)
+    {
+    }
+
+    int
+    stream_to_streams_impl::work(int noutput_items,
+			    gr_vector_const_void_star &input_items,
+			    gr_vector_void_star &output_items)
+    {
+      size_t item_size = output_signature()->sizeof_stream_item(0);
+
+      const char *in = (const char *)input_items[0];
+      char **outv = (char **)&output_items[0];
+      int nstreams = output_items.size();
+      
+      for (int i = 0; i < noutput_items; i++) {
+	for (int j = 0; j < nstreams; j++) {
+	  memcpy(outv[j], in, item_size);
+	  outv[j] += item_size;
+	  in += item_size;
+	}
+      }
+      
+      return noutput_items;
+    }
+
+  } /* namespace blocks */
+} /* namespace gr */
diff --git a/gr-blocks/lib/stream_to_streams_impl.h b/gr-blocks/lib/stream_to_streams_impl.h
new file mode 100644
index 000000000..9a96983ff
--- /dev/null
+++ b/gr-blocks/lib/stream_to_streams_impl.h
@@ -0,0 +1,44 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2012 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef INCLUDED_STREAM_TO_STREAMS_IMPL_H
+#define INCLUDED_STREAM_TO_STREAMS_IMPL_H
+
+#include <blocks/stream_to_streams.h>
+
+namespace gr {
+  namespace blocks {
+
+    class BLOCKS_API stream_to_streams_impl : public stream_to_streams
+    {
+    public:
+      stream_to_streams_impl(size_t itemsize, size_t nstreams);
+
+      int work(int noutput_items,
+	       gr_vector_const_void_star &input_items,
+	       gr_vector_void_star &output_items);
+    };
+
+  } /* namespace blocks */
+} /* namespace gr */
+
+#endif /* INCLUDED_STREAM_TO_STREAMS_IMPL_H */